Functions¶

	`buffer_pool_config_get_cuda_alloc_method` (config)
	`buffer_pool_config_get_cuda_stream` (config)
	`buffer_pool_config_set_cuda_alloc_method` (config, method)
	`buffer_pool_config_set_cuda_stream` (config, stream)
	`context_new_cuda_context` (cuda_ctx)
	`cuda_create_user_token` ()
	`cuda_ensure_element_context` (element, device_id, cuda_ctx)
	`cuda_handle_context_query` (element, query, cuda_ctx)
	`cuda_handle_set_context` (element, context, device_id, cuda_ctx)
	`cuda_load_library` ()
	`cuda_memory_init_once` ()
	`cuda_nvrtc_compile` (source)
	`cuda_nvrtc_compile_cubin` (source, device)
	`cuda_nvrtc_load_library` ()
	`is_cuda_memory` (mem)

Details¶

GstCuda.buffer_pool_config_get_cuda_alloc_method(config)¶

Parameters:: config (Gst.Structure) – a buffer pool config
Return type:: GstCuda.CudaMemoryAllocMethod

Gets configured allocation method

New in version 1.24.

GstCuda.buffer_pool_config_get_cuda_stream(config)¶

Parameters:: config (Gst.Structure) – a buffer pool config
Returns:: the currently configured GstCuda.CudaStream on config or None if config doesn’t hold GstCuda.CudaStream
Return type:: GstCuda.CudaStream or None

New in version 1.24.

GstCuda.buffer_pool_config_set_cuda_alloc_method(config, method)¶

Parameters:

config (Gst.Structure) – a buffer pool config
method (GstCuda.CudaMemoryAllocMethod) –

Sets allocation method

New in version 1.24.

GstCuda.buffer_pool_config_set_cuda_stream(config, stream)¶

Parameters:

config (Gst.Structure) – a buffer pool config
stream (GstCuda.CudaStream) – a GstCuda.CudaStream

Sets stream on config

New in version 1.24.

GstCuda.context_new_cuda_context(cuda_ctx)¶

Parameters:: cuda_ctx (GstCuda.CudaContext) – a GstCuda.CudaContext
Returns:: a new Gst.Context embedding the cuda_ctx
Return type:: Gst.Context

New in version 1.22.

GstCuda.cuda_create_user_token()¶

Returns:: user token value
Return type:: int

Creates new user token value

New in version 1.24.

GstCuda.cuda_ensure_element_context(element, device_id, cuda_ctx)¶

Parameters:

element (Gst.Element) – the Gst.Element running the query
device_id (int) – preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.
cuda_ctx (GstCuda.CudaContext) – the resulting GstCuda.CudaContext

Returns:

whether a GstCuda.CudaContext exists in cuda_ctx

cuda_ctx:: the resulting GstCuda.CudaContext

Return type:

(bool, cuda_ctx: GstCuda.CudaContext)

Perform the steps necessary for retrieving a GstCuda.CudaContext from the surrounding elements or from the application using the Gst.Context mechanism.

If the content of cuda_ctx is not None, then no Gst.Context query is necessary for GstCuda.CudaContext.

New in version 1.22.

GstCuda.cuda_handle_context_query(element, query, cuda_ctx)¶

Parameters:

element (Gst.Element) – a Gst.Element
query (Gst.Query) – a Gst.Query of type Gst.QueryType.CONTEXT
cuda_ctx (GstCuda.CudaContext or None) – a GstCuda.CudaContext

Returns:

Whether the query was successfully responded to from the passed context.

Return type:

bool

New in version 1.22.

GstCuda.cuda_handle_set_context(element, context, device_id, cuda_ctx)¶

Parameters:

element (Gst.Element) – a Gst.Element
context (Gst.Context) – a Gst.Context
device_id (int) – preferred device-id, pass device_id >=0 when the device_id explicitly required. Otherwise, set -1.
cuda_ctx (GstCuda.CudaContext) – location of a GstCuda.CudaContext

Returns:

whether the cuda_ctx could be set successfully

cuda_ctx:: location of a GstCuda.CudaContext

Return type:

(bool, cuda_ctx: GstCuda.CudaContext)

Helper function for implementing Gst.Element.do_set_context() in CUDA capable elements.

Retrieves the GstCuda.CudaContext in context and places the result in cuda_ctx.

New in version 1.22.

GstCuda.cuda_load_library()¶

Returns:: True if the libcuda could be loaded False otherwise
Return type:: bool

Loads the cuda library

New in version 1.22.

GstCuda.cuda_memory_init_once()¶: Ensures that the GstCuda.CudaAllocator is initialized and ready to be used.

New in version 1.22.

GstCuda.cuda_nvrtc_compile(source)¶

Parameters:: source (str) – Source code to compile
Return type:: str

New in version 1.22.

GstCuda.cuda_nvrtc_compile_cubin(source, device)¶

Parameters:

source (str) – Source code to compile
device (int) – CUDA device

Returns:

Compiled CUDA assembly code if successful, otherwise None

Return type:

str

New in version 1.24.

GstCuda.cuda_nvrtc_load_library()¶

Returns:: True if the library could be loaded, False otherwise
Return type:: bool

Loads the nvrtc library.

New in version 1.22.

GstCuda.is_cuda_memory(mem)¶

Parameters:: mem (Gst.Memory) – A Gst.Memory
Return type:: bool

Check if mem is a cuda memory

New in version 1.22.